Self-closing valve



Dec. 31, 1929. r. PROT-ZER saw cLosmG VALVE Filed June 13. 1927 INVENTORF'n'Iz Puke:-

1 and the like.

Patented Dec. 31, 1929 FRITZ PROTZER, OF DETROIT, MICHIGAN SELF-CLOSING-VALVE Application filed June 13, 1927. Serial No. 198,333.

My invention relates to a new and useful improvement in a self closingvalve adapted for interposing in a fluid conductor for controlling theflow of fluid through the conductor. f

It is especially useful in connection with the control of fluid in whichthe flow of the fluid at periodic intervals or short intervals isdesired, such as in flushing closet bowls When used in connection withthe flushing of closet bowls, the device has proven most eflicient,supplying the necessary flow of water to the closet bowl to effect thedesired siphonage, while at the same time,

i eliminating the noise incident to'the flushing operation.

It is an object of the present invention to provide a self closing valveof this type'which will attain the advantages mentioned and afford avalve which may be easily and quickly connected in position, easilyoperated and economically manufactured.

Another object is the provision of a valve of this class in which thevarious parts are reduced to a minimum, and the inoperativeness of thedevice resulting from wear or displacement of the various partsobviated.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of partshereinafter described and claimed.

The invention will be best understood by a reference to the accompanyingdrawings which form a part of this specification and in which Fig. 1 isa central sectional view of the invention.

Fig. 2 is a view taken on line 2-2 of Fig. 1.

Fig. 3 is a view taken on line 33 of Fig. 1.

In the drawings the fluid conduit is illus trated by the pipes 7 and 8through which the fluid is adapted to flow in the direction indicated bythe arrows.

The invention comprises a semi-spherical body 8 made from suitable metaland provided with an outwardly projecting, exteriorly threaded neck 9adapted for threading into the pipe 7. Projecting inwardly of the semispherical body 8 is a seat forming boss 10 having the valve seat 11formed at its inner end. The edge of the semi-spherical body 8 isoutwardly offset as at 12 and interiorly threaded for threading over thesemi-spherical cooperating shell 13 also made preferably from metal, andprovided with the outwardly projecting neck 14- which is eXteriorlythreaded for threading into the pipe 8-. Projecting inwardly from theedge of the shell 13 are ribs 15 which serve to connect and arepreferably formed integral with the inwardly positioned semi-sphericalshell 16 provided with the outwardly. projecting bulge .17 in which isformed the valve seat 18, this valve seat being closed by the valve head19, which carries the stem 20 projected through the shell 13, and uponwhich is mounted the handle 21, a coil spring 22 being positioned on thevalve stem 20, as shown, for normally moving the valve head 19 intoclosing position, as shown in Fig. 1. Positioned interiorly of thesemi-spherical body 8 is a flexible semi-spherical body 23 which servesas a valve'closer and which is formed preferably from rubber or othersuitable flexible material having the necessary resiliency. The edge 241of this valve closer 23 is outwardly turned and engaged between a ring25 and the edge of the inwardly positioned. shell 16,

this ring having enlargements 26 formed thereon in registration with theribs 15, through which suitable screws 27 are projected and threadedinto the ribs 15 so as to securely clamp the outwardly turned edge 24 ofthe valve closer 23 against the edge of the rib 16 and seal at thispoint the interior of the shell 16 from the interior of thesemispherical body 8. Mounted axially of the valve closer 28 is a valvehead 28 which is provided with the neck 29 projected through the opening30 formed in the valve closer 23 and upon which is threaded the end 31engaging the washer 32, so that the valve head 28 is securely fastenedon the valve closer 23. Projecting upwardly from the valve head 28 is apipe 33 which is in registration with the bore 34 formed through thevalve head 28. This pipe 33 is slidably projected through a guide 34:formed in the neck 9.

In operation when the parts are in the position shown in Fig. 1 thefluid flowing inwardly through the pipe 7 will pass into the interior ofthe semi-spherical body 8 and through the spaces into the space betweenthe outer shell 13 and the inwardly positioned shel 1G, and thenceoutwardly through the pipe 8. At the same time a portion of the fluidwill flow inwardly through the pipe 33 so to g dually till the chamberformed A shell 16 and the valve closer 23, ad 19 bein held in closedposition -e s 111g 22. The closer 23 when in its position will retainthe valve head ftlncllll with the seat 11 and when ire inside thechamber formed by shell 16 and the closer 23 becomes or nearly equal, tothe pressure on the A; inwardly through the pipe 7,

l, because oi its resiliency, move the head .28 into engagement with theseat 11, and thus the flow of the fluid through the pipe 8 terminated.To start the flow through the pipe 8 again, the valve head 19 may bemoved inwardly from its seat 18, thus permitting the contents of thechamber formed by the inwardly positioned shell 16 and the closer 23 toflow outwardly through the opening. the fluid in The )ressure or thepipe 7 will then force the closer 23 into the position shown in Fig. 1,and the inward pressure on the valve head 19 in the meanwhile havingbeen released, the valve head 19 will move on to its seat 18 and theoperation repeated.

I have found in practical operation that the pressure of the closer 23on the head 28 will work satisfactorily with the ordinary city supplyofwater connected thereto, it the resiliency of this closer 23 is ableto overcome the pressure of two atmospheres.

The semi-spherical body 8 and the semi- )herical shell 12 may be said toconstitute her a single container, and the inwardly positioned Fii-spherical shell 16, together with the clo 28, may be said toconstitute a container positioned inwardly of the cont-f er made up iromthe parts 8 and 13.

vi ith a valve constructed in this manner, an economical and efficientoperation is provided in connection with the flushing of closet bowlsand the advantages desired are obtained.

While I have illustrated and described the preferred to-""1 of myinvention I do not wish to limit myselt to the precise details ofstructure shown, but desire to avail myself of such variations andmodifications as come within the scope of the appended claim.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

A valve of the class described comprising: a substantially sphericalcontainer having a pair of metallic sections threaded together at theiropen ends, one of said sections having an inlet opening and the otherhaving an outlet opening; a valve seat extended inwardly of saidcontainer at said inlet opening; a substantially semi-spherical rigidmetallic shell positioned within said container and formed integral withthe section having the outlet opening and spaced therefrom; a pluralityof ribs connecting said section and said shell adjacent their open ends;a substantially semi-spherical tlexible shell positioned within saidcontainer and engaging at its edges the edges of said rigid shell; aring engaging the edges of said flexible shell and clamping the sameagainst the edges of said ri d shell; threaded members projected n saidring and through the edges of aid hrihle shell and threaded into saidribs tor retainmg said ring in clamping position; a valve mounted onsaid flexible shell and adapted upon distension of said flexible shellfor engaging in said seat and closing cornmunication of said containerwith said inlet opening, said flexible shell and said rigid shellforming an inner container normally in con'm'iunication with said inletopening, said first-mentioned container being normally in communicationwith said outlet opening; and a valve operable from the exterior of saidcontainer for controlling communication of said inner positionedcontainer with said outlet opening.

In testimony wdiereoi I have signed the foregoing specification.

FRITZ PROTZEi

